Obtaining a medical history is always the first "test", part of understanding the likelihood of significant disease, as detectable within the current limitations of clinical medicine.
(*) due to the high cost, LDL is usually calculated instead of being measured directly source: Beyond Cholesterol, Julius Torelli MD, 2005 ISBN 0-312-34863-0 Electrocardiography (ECG/EKG in German vernacular.
The ECG allows observation of the heart electrical activity by visualizing waveform beat origin (typically from the sinoatrial or SA node) following down the bundle of HIS and ultimately stimulating the ventricles to contract forcing blood through the body.
A Fasegraphy allows expanding the system of Electrocardiography diagnostic features, based on the evaluation of the speed characteristics of the process, and thereby increasing the sensitivity and specificity of ECG-diagnostics.
An event monitor records short term EKG rhythm patterns, generally storing the last 2 to 5 minutes, adding in new and discarding old data, for 1 to 2 weeks or more.
This linear relation is accurate up to about age 30, after which it mildly underestimates typical maximum attainable heart rates achievable by healthy individuals.
High frequency analysis of the QRS complex may be useful for detection of coronary artery disease during an exercise stress test.